Results 11 to 20 of about 72,093 (265)

Microbial activity response to solar radiation across contrasting environmental conditions in Salar de Huasco, Northern Chilean Altiplano

open access: yesFrontiers in Microbiology, 2016
In high altitude environments, extreme levels of solar radiation and important differences of ionic concentrations over narrow spatial scales may modulate microbial activity.
Klaudia Liliana Hernández   +16 more
doaj   +2 more sources

Formation of an Extended Equatorial Shadow Zone for Low‐Frequency Saturn Kilometric Radiation

open access: yesGeophysical Research Letters
Saturn Kilometric Radiation (SKR), being the dominant radio emission at Saturn, has been extensively investigated. The low‐frequency extension of SKR is of particular interest due to its strong association with Saturn's magnetospheric dynamics.
Siyuan Wu   +11 more
doaj   +2 more sources

Classical Radiation Reaction and Collective Behaviour [PDF]

open access: yes, 2023
Charged particles emit electromagnetic radiation when accelerated, and the subsequent impact on the trajectory must be accounted for by energy and momentum conservation in a self-consistent equation of motion, such as the Landau-Lifshitz (LL) equation ...
Quin, Michael John
core   +3 more sources

Radiation optimization for phased arrays of antennas incorporating the constraints of active reflection coefficients [PDF]

open access: yes, 2022
High-power radiations from active antenna arrays may result in strong reflected power to cause RF device breakdown by the strong inter-element mutual coupling.
Liu, Bo   +4 more
core   +1 more source

Outgoing Near‐Infrared Radiation From Vegetation Scales With Canopy Photosynthesis Across a Spectrum of Function, Structure, Physiological Capacity, and Weather [PDF]

open access: yes, 2020
We test the relationship between canopy photosynthesis and reflected near-infrared radiation from vegetation across a range of functional (photosynthetic pathway and capacity) and structural conditions (leaf area index, fraction of green and dead leaves,
Joe Verfaillie   +28 more
core   +1 more source

Micro-pressure wave radiation from tunnel portals in deep cuttings [PDF]

open access: yes, 2022
The reflection and radiation of steep-fronted wavefronts at a tunnel exit to a deep cutting is studied and contrasted with the more usual case of radiation from over-ground portals.
Wang, Honglin   +2 more
core   +1 more source

Autodyne characteristics of stabilized UHF-oscillators at a strong reflected signal [PDF]

open access: yesТехнологія та конструювання в електронній апаратурі, 2011
Calculations and examinations of phase, amplitude, frequency and amplitude-frequency characteristics are fulfilled for the autodyne system stabilized by the external high-Q cavity as well as spectral characteristics under condition of exact and non-exact
V. Ya. Noskov   +2 more
doaj   +1 more source

The relation between the surface composition anomaly and distribution of the exosphere of Mercury

open access: yesEarth, Planets and Space, 2023
In celestial bodies with tenuous collisionless atmospheres, such as Mercury, the spatial distribution of the exosphere is expected to reflect the surface composition.
Yudai Suzuki   +3 more
doaj   +1 more source

Estimation of nonlinear dependence of fiber Bragg grating readings on temperature and strain using experimental data

open access: yesFracture and Structural Integrity, 2022
The readings of the Bragg grating are determined based on the optical radiation reflected from it. A quantitative characteristic of this radiation is the wavelength at which the maximum power of the optical signal is achieved.
I. Shardakov   +5 more
doaj   +1 more source

Effects of Kilovoltage on Image Quality and Entrance Surface Dose in Lumbar Spine Digital Radiography [PDF]

open access: yesIranian Journal of Medical Physics, 2019
Introduction: Digital radiography possesses a wide dynamic range and has a major advantage in producing an acceptable image of diagnostic value even though overexposure occurs. Lumbar spine (LS) radiography is the most common examinations that gives high
Hanis Aisyah Ramli, Soo-Foon Moey
doaj   +1 more source

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